EP0660559A1 - Mehrträger-Frequenzsprungkommunikationssystem - Google Patents
Mehrträger-Frequenzsprungkommunikationssystem Download PDFInfo
- Publication number
- EP0660559A1 EP0660559A1 EP94203635A EP94203635A EP0660559A1 EP 0660559 A1 EP0660559 A1 EP 0660559A1 EP 94203635 A EP94203635 A EP 94203635A EP 94203635 A EP94203635 A EP 94203635A EP 0660559 A1 EP0660559 A1 EP 0660559A1
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- transfer means
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L13/00—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00
- H04L13/02—Details not particular to receiver or transmitter
- H04L13/06—Tape or page guiding or feeding devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/713—Spread spectrum techniques using frequency hopping
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2626—Arrangements specific to the transmitter only
- H04L27/2627—Modulators
- H04L27/2628—Inverse Fourier transform modulators, e.g. inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2649—Demodulators
- H04L27/265—Fourier transform demodulators, e.g. fast Fourier transform [FFT] or discrete Fourier transform [DFT] demodulators
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/02—Channels characterised by the type of signal
- H04L5/023—Multiplexing of multicarrier modulation signals
- H04L5/026—Multiplexing of multicarrier modulation signals using code division
Definitions
- the invention relates to a multi-carrier spread frequency communication system by frequency hopping comprising at least one transmitting station and at least one receiving station communicating with each other through at least one transmission channel, the system comprising, on transmission , data transfer means, in baseband, by frequency hopping spread spectrum coding and, on reception, reverse transfer means for recovering estimated data.
- It also relates to a communication system comprising a transmitting / receiving base station and a plurality of transmitting / receiving user stations. It also relates to a transmitting / receiving user station, in particular either a mobile station ensuring communications over the air, or a fixed station communicating by cables, satellites or others. It also relates to a base station intended to receive and retransmit messages in order to put mobile stations into communication with one another.
- a system of communication between users must meet several criteria and among these that of confidentiality is easily felt. The designers of such systems therefore turned to the use of codings for the transmission of the messages to be transmitted.
- a powerful coding system is the multiple division code access system called CDMA in English (Code Division Multiple Access). This system has the advantages of confidentiality, robustness at interference, robustness against interference or degradation, and is, moreover, easily scalable to any number of users.
- These messages are then coded by the known technique known as spread spectrum by frequency hopping which consists in modulating M different carriers by the M messages and permuting, from time to time, the allocation of each carrier to each interlocutor respectively to distribute the faults transmission channel. Depending on whether 1 is greater than or less than 1, the fast frequency hopping technique or the slow frequency hopping technique is obtained. When 1 is equal to 1, the duration of the message to be coded is not changed.
- a base station receives coded messages from all users, decodes them then recodes them and retransmits them to all users. It manages communications, that is to say it allows a recipient user, and only him, to decode a message intended for him.
- Such a system requires using an equalizer at reception which can become complex when the number of users increases.
- the echoes relating to a user's channel will generally not be the same as the echoes from the channel relating to another user. The actual performance of such a system is therefore limited.
- An object of the invention is therefore to eliminate these drawbacks and to increase the reliability and the capacity of the transmissions in communications between users.
- An additional aim is to keep the system reduced in complexity in addition to the increased performance.
- the transfer means comprise means for applying a reverse Fourier transform and the reverse transfer means comprise means for applying a direct Fourier transform.
- the system then comprises, in the transmitting station, means for transforming messages to be transmitted into symbols of digital modulation, and, in the receiving station, means for, conversely, extracting the messages from the symbols received.
- the means for sampling can generate any number of sampled symbols. This number is a real number. Depending on the number of samples taken per symbol, and the frequency of change in the allocation of the mixture, either the fast frequency hopping technique or the slow frequency hopping technique is performed.
- the means for mixing comprise means for grouping into packets several sampled symbols, a packet containing a number of sampled symbols greater than or equal to the number of symbols of the constellation from which they originate.
- the frequency multiplexed symbols can be used preferentially by incorporating them in a frame format such as that used in a distribution technique with orthogonal frequency multicarrier called OFDM technique (in English: Orthogonal Frequency Division Multiplexing).
- OFDM technique in English: Orthogonal Frequency Division Multiplexing
- the special symbols can be synchronization, service, channel estimation or other symbols.
- one or more automatic gain control module can be added. They can be arranged to act on each coded message assigned to each carrier at the output of the means for applying the direct Fourier transform.
- the transmitted energy is much better distributed in frequency on the channel which makes this system more robust to selective fading.
- the combination of the spread spectrum technique by frequency hopping with the multicarrier technique by multiplexed distribution of orthogonal frequencies thus brings new performances and advantages.
- the system according to the invention comprises transmitting / receiving user stations which can be mobile, and at least one base station which is fixed.
- a base station covers what is called a cell, that is to say that it has a certain range of action. Beyond this range, another base station takes over when the mobile station has left the limits of the cell.
- a cell can have a larger size, whereas previously the increase in size required an increased complexity of the equalizer.
- Each user station has means for transmitting to the base station and for decoding only the messages intended for him.
- the base station has means for transmitting to all the user stations and for receiving messages from all the user stations and means for managing the communication between the user stations.
- the description which follows relates to the general case for which the transmission between the transmitting station and the receiving station takes place through a base station. Obviously, the invention also relates to the case for which the transmission takes place directly without the use of a base station.
- FIG. 10 symbolically represents a multi-user communication system (U1, U2 ... U k ... U M ) where M is the total number of users. All users communicate by bidirectional links with a base station B. This serves as a relay to put two user stations in communication with each other.
- a base station has a range. The user stations being a priori mobile stations, a user station U2 (or more) can go outside the range of a base station B1. In this case, another base station B2 participates in the management of communications.
- the two base stations B1, B2 then exchange management information to put in communication a user station U1 (of the action area of B1) with a user station U2 (of the action area of B2).
- the source 73 and channel 75 encoders may not exist depending on the characteristics of the communication channel. Similarly, the A / D converter 71 and the source encoder 73 may not exist if the message Me is available in digitized form (connection 9). On the other hand, the converter exists, for example, in the case of voice messages for telephone communications from mobile user stations.
- the means 20 include in series means 97 for channel decoding, CHAN DECOD, means 93 for source decoding SOUR DECOD and means 91 for digital-analog D / A conversion. These means exist insofar as the corresponding codings have been carried out before transmission.
- the means 24 perform, on reception, operations opposite to those performed on transmission.
- the invention essentially relates to the frequency hopping spectrum spreading means 12 acting, on transmission, on the symbols Se to be transmitted and the means 22 for extracting symbols received Sr.
- FIG. 3 represents a diagram of a conventional spread spectrum system consisting in simultaneously modulating different carriers Fa, Fb, by the messages to be transmitted while imposing frequency hops in the allocation of the carriers to said messages.
- Figure 3 relates to a base station.
- the diagram is then simplified because it does not has only one lane.
- the message Me1 of a user is first coded (figure 1-A) in symbols Se1 which are sampled at a rate 1 / Tc by a sampler 821 (figure 3).
- the samples thus obtained are multiplied in a multiplier 801 by a carrier of frequency Fa coming from a local generator GEN1.
- the data from all users all pass through the base station.
- the channel assigned to the M th user comprises a generator GEN M which delivers another carrier Fb, with another multiplier 80 M and another sampler 82 M. All the outputs of the multipliers are added together in an adder 84 to provide, on a single output, Sce multicarrier symbols.
- Each channel is assigned a specific frequency at a given time. To ensure the quality of the transmission, the assignments to each channel of a frequency value are modified from time to time, preferentially retaining the characteristic that at each instant the same frequency is not assigned to two distinct channels. The generators are therefore controlled to rapidly change the carrier frequency when the frequency hopping instant occurs.
- the Sce symbols are then introduced into the MOD 14 radio frequency modulator to be transmitted on the channel.
- FIG. 2 represents a diagram of a communication system according to the invention comprising a base station B and user stations for example two stations U1 and U2.
- the user stations having the same transmission / reception means, only the station U1 will be detailed later, it being understood that a transmitting station communicates with another station then operating as a receiving station.
- the station U1 comprises the coding means 10 which deliver symbols Se. These are then coded in a MIX mixer 13 followed by a device 15 performing an inverse Fourier transform FFT ⁇ 1 and the MOD 14 radio frequency modulator, the digital data being transmitted as described above.
- the mixer 13 and the device 15 carry out data processing equivalent to that carried out by the means 12 of FIG. 3. Nevertheless, the processed data are delivered in parallel according to the invention while they are combined on a single output according to the known technique.
- the symbols sent arrive, via a channel CHA2 which may be different from the previous one, to another user station U2 which acts as a receiving station.
- the station U1 operates as a receiving station of another transmitting station. It receives modulated symbols Smr which are demodulated by the demodulator 24 then demultiplexed by a device 25 which performs a Fourier transform FFT which provides coded symbols received Scr which are then disentangled by disentangling means MIX ⁇ 1 23 performing a reverse untangling of the MIX mixture produced on transmission.
- Base station B receives all the data from all the user stations. These data arrive superimposed on each other in the same frequency band at the input of the base station. This performs communications management. For this, when a station U1 must be put in communication with a station U2, the base station B recodes the message to be transmitted either with the mixing code of the user station for which this message is intended, or with the same mixing code as that of the transmitting station and the base station communicates to the receiving station the mixing code specific to the transmitting station so that it can decode the messages which reach it by the channel.
- FIG. 4 represents, in the case of a base station, the mixing block MIX 13B and the block 15B FFT ⁇ 1.
- the symbols Se1 - Se M from the M users arrive on sampling means 821 - 82 M operating at the rate 1 / Tc to provide sampled symbols Su1 - Su M.
- the sampled symbols are grouped in packets (Sse symbols) in means for grouping in S / P packets, 831 - 83 M.
- the S / P 831 - 83 M means exist insofar as the sampling provides more than one sample per symbol Se.
- means 11 perform a mixture of the grouped sampled symbols Sse. At the output of the means 11, the sampled symbols are no longer arranged in the same order as that which they had at the input.
- This order is a function of an SA mixing command which imposes, for each sampled symbol, a specific assignment to a carrier frequency of a multicarrier modulation, the assignment being further subject to frequency hopping.
- the symbols thus mixed are then transformed into frequency multiplexed symbols according to a distribution of orthogonal frequencies.
- This is done in the multiplexing means 15B which perform an inverse Fourier transform.
- N 2 G where G is a positive integer.
- FIG. 5 represents an exemplary embodiment of the mixing means 11.
- the symbols Sse are for example written in a memory MEM 88 at addresses determined by an address generator ADDR GEN 89.
- ADDR GEN 89 On reading this memory MEM, the generator of addresses 89 provides reading addresses different from those used for writing. This produces the mixture of symbols shown schematically in Figure 4.
- a register of output 87 allows you to group the symbols for a common output in parallel.
- OFDM orthogonal frequency division multiple access
- a protection device PROT 54 adds to this part of the data block, data corresponding to a guard interval. This consists of copying certain data.
- a symbol Se is generally a complex value.
- the first line represents, for example, a series of states for a symbol Se1 to be coded for the user U1.
- a symbol Se1 has a duration Ts.
- Ts a series of several symbols, for example ⁇ symbols, corresponding to a duration ⁇ .Ts.
- To each user U1. . .U M corresponds to such a sequence Se1 - Se M.
- ⁇ symbols give birth to L symbols at the output of each S / P grouping means, 831 - 83 M for each duration ⁇ .Ts and for each user U (with L ⁇ ⁇ ).
- the L / ⁇ ratio is an integer.
- Nc data (signal W)
- Nc the number of users multiplied by L.
- K G symbols are added in front of the N symbols to constitute a block of (K G + N) symbols to be transmitted (mark Z).
- a device 56 for parallel-series transformation performs the serialization of the (K G + N) symbols.
- the successive blocks of (K G + N) OFDM symbols are then organized into an OFDM frame in a 58 FRAME device. This adds special symbols 53 (synchronization, wobulation or others) which serve, inter alia, to synchronize the emission and the reception or to estimate the channel.
- a low-pass filter 59 LPF filters the signals before their emission by the radio frequency modulator 14, 14B (FIG. 2).
- FIG. 11 represents the power spectral density of the signal transmitted as a function of the frequency.
- the curves 701 - 70 N correspond to a conventional spread spectrum system characterized by a spectrum formed by narrow bands each centered on frequencies f1, f2 ... f N separated from each other by a guard band ⁇ f.
- Curve 72 corresponds to a system according to the invention which combines spread frequency hopping frequency techniques with techniques by multiplexed distribution of orthogonal frequencies transmitted on multicarriers.
- the horizontal scale corresponds to a frequency F n in baseband normalized with respect to the useful band of the signal.
- the vertical scale corresponds to the power spectral density expressed in decibels.
- the spectrum 70 has several narrow disjoint bands to allow separation of the oscillators and therefore a loss.
- the spectrum 72 is rectangular, which shows that the energy transmitted for all the carriers remains constant in the useful band of the signal. There is therefore a better use of the transmission channel which makes the transmissions more reliable and reduces the complexity of the reception circuits.
- FIG. 6 The diagram of the OFDM multiplexer shown in FIG. 6, which is a more elaborate version of the FFT ⁇ 1 multiplexer 15 of FIG. 2, is preferably used both in a user station and in a base station.
- the transmission channels may be subject to fading which alters the received signals. These faintings can occur in the frequency and / or time domain. It is therefore desirable to perform, on reception, an automatic gain control. However, the latter may not be essential. It therefore appears in dotted lines in FIG. 8.
- FIG. 8 represents a diagram of the receiving part of a user station with automatic gain control AGC.
- the Nc signals assigned to each carrier are preferably provided with an AGC 631 - 63 Nc device .
- the ML data leaves in a group of M packets of L data.
- Each packet relates to a user U1, .... U M.
- a packet of L data in parallel is transformed by means of parallel-series transformation P / S 931 - 93 M into L serial data which are sampled at the rate 1 / Tc by sampling means 921 - 92 M.
- the means 931 - 93 M for separating the samples from a packet exist insofar as the reverse operation was carried out on transmission.
- 901 - 90 M decision means are used to estimate the ⁇ emission symbols. e 1, e M for each user.
- a decision means 901 - 90 M can consist, for example, of an averaging device ⁇ 95 in series with a decision-making device with threshold 97 (FIG. 9).
- OFDM signals organized in frames are used. Because each user station has its own frame, the reception synchronization mechanisms are simplified.
- the use of a guard interval per data block makes it possible to absorb all the uncertainties which could appear as well due to propagation delays varying according to the transmitter / receiver distances as due to delays due to paths. multiple. In particular, the propagation delays are linked to the operating range of the base station.
- the existence of the guard interval makes it possible to increase this radius of action compared to conventional spread spectrum techniques without increasing the complexity of the equipment used. In the case of the conventional technique, it would necessarily be necessary to have a complex equalizer to overcome these difficulties.
- the energy is distributed more uniformly over the channel, which makes the system more robust to fading.
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Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9315460 | 1993-12-22 | ||
FR9315460 | 1993-12-22 |
Publications (2)
Publication Number | Publication Date |
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EP0660559A1 true EP0660559A1 (de) | 1995-06-28 |
EP0660559B1 EP0660559B1 (de) | 2005-04-27 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP94203635A Expired - Lifetime EP0660559B1 (de) | 1993-12-22 | 1994-12-15 | Mehrträger-Frequenzsprungkommunikationssystem |
Country Status (6)
Country | Link |
---|---|
US (1) | US5548582A (de) |
EP (1) | EP0660559B1 (de) |
JP (1) | JP3693303B2 (de) |
KR (1) | KR100379047B1 (de) |
DE (1) | DE69434353T2 (de) |
SG (1) | SG48266A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2296407B (en) * | 1994-12-22 | 1999-10-06 | Roke Manor Research | Frequency hopped cellular mobile radio systems |
EP1330045A1 (de) * | 2000-10-24 | 2003-07-23 | Mitsubishi Denki Kabushiki Kaisha | Sender und empfänger eines spreizspektrum-kommunikationssystems und modulations- und demodulationsverfahren dafür |
CN108964702A (zh) * | 2018-08-24 | 2018-12-07 | 电子科技大学 | 用于跳频通信中跳频序列随机映射后的反演方法 |
Families Citing this family (135)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6334219B1 (en) | 1994-09-26 | 2001-12-25 | Adc Telecommunications Inc. | Channel selection for a hybrid fiber coax network |
US5682376A (en) * | 1994-12-20 | 1997-10-28 | Matsushita Electric Industrial Co., Ltd. | Method of transmitting orthogonal frequency division multiplex signal, and transmitter and receiver employed therefor |
USRE42236E1 (en) | 1995-02-06 | 2011-03-22 | Adc Telecommunications, Inc. | Multiuse subcarriers in multipoint-to-point communication using orthogonal frequency division multiplexing |
US7280564B1 (en) | 1995-02-06 | 2007-10-09 | Adc Telecommunications, Inc. | Synchronization techniques in multipoint-to-point communication using orthgonal frequency division multiplexing |
US5812522A (en) * | 1995-03-31 | 1998-09-22 | Airtouch Communications, Inc. | Location-ruled radio-integrated network |
US5898733A (en) * | 1995-06-30 | 1999-04-27 | Philips Electronics North America Corporation | Packet hopping system with sliding frequency, and transciever for the system |
US5790516A (en) * | 1995-07-14 | 1998-08-04 | Telefonaktiebolaget Lm Ericsson | Pulse shaping for data transmission in an orthogonal frequency division multiplexed system |
SE515752C2 (sv) * | 1995-08-28 | 2001-10-08 | Telia Ab | Direktåtkomst i OFDM-system |
US5914933A (en) * | 1996-03-08 | 1999-06-22 | Lucent Technologies Inc. | Clustered OFDM communication system |
SE518137C2 (sv) * | 1996-06-18 | 2002-09-03 | Telia Ab | Pulsformning och utjämning i multipelsystem med ortogonal frekvensindelning |
JPH10107696A (ja) * | 1996-09-30 | 1998-04-24 | Sanyo Electric Co Ltd | マルチキャリア通信方法及び装置 |
DE19647833B4 (de) * | 1996-11-19 | 2005-07-07 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Verfahren zur gleichzeitigen Funkübertragung digitaler Daten zwischen mehreren Teilnehmerstationen und einer Basisstation |
JPH118644A (ja) * | 1996-11-21 | 1999-01-12 | Yazaki Corp | 送信装置、受信装置、通信装置、通信方法、及び通信システム |
US5793795A (en) * | 1996-12-04 | 1998-08-11 | Motorola, Inc. | Method for correcting errors from a jamming signal in a frequency hopped spread spectrum communication system |
US6633550B1 (en) | 1997-02-20 | 2003-10-14 | Telefonaktiebolaget Lm Ericsson (Publ) | Radio transceiver on a chip |
US6128276A (en) * | 1997-02-24 | 2000-10-03 | Radix Wireless, Inc. | Stacked-carrier discrete multiple tone communication technology and combinations with code nulling, interference cancellation, retrodirective communication and adaptive antenna arrays |
DE19716011A1 (de) * | 1997-04-17 | 1998-10-22 | Abb Research Ltd | Verfahren und Vorrichtung zur Informationsübertragung über Stromversorgungsleitungen |
US6038450A (en) * | 1997-09-12 | 2000-03-14 | Lucent Technologies, Inc. | Soft handover system for a multiple sub-carrier communication system and method thereof |
KR100396506B1 (ko) * | 1997-09-13 | 2003-12-24 | 삼성전자주식회사 | 이중직교부호도약다중접속장치및방법 |
US7301986B2 (en) * | 1997-09-15 | 2007-11-27 | Andrzej Partyka | Frequency hopping system for intermittent transmission |
US6058137A (en) | 1997-09-15 | 2000-05-02 | Partyka; Andrzej | Frequency hopping system for intermittent transmission |
US6466138B1 (en) | 1997-09-15 | 2002-10-15 | Andrzej Partyka | Meshed telemetry system using frequency hopping for intermittent transmission |
EP1023650B1 (de) | 1997-10-13 | 2003-09-24 | Rosemount Inc. | Übertragungstechnik für feldgeräte in industriellen prozessen |
JP3821331B2 (ja) * | 1997-10-31 | 2006-09-13 | ソニー株式会社 | 通信端末装置及びセルラー無線通信システム並びに情報通信方法 |
US6130859A (en) * | 1997-12-01 | 2000-10-10 | Divecom Ltd. | Method and apparatus for carrying out high data rate and voice underwater communication |
US7076168B1 (en) * | 1998-02-12 | 2006-07-11 | Aquity, Llc | Method and apparatus for using multicarrier interferometry to enhance optical fiber communications |
US7430257B1 (en) * | 1998-02-12 | 2008-09-30 | Lot 41 Acquisition Foundation, Llc | Multicarrier sub-layer for direct sequence channel and multiple-access coding |
US5955992A (en) * | 1998-02-12 | 1999-09-21 | Shattil; Steve J. | Frequency-shifted feedback cavity used as a phased array antenna controller and carrier interference multiple access spread-spectrum transmitter |
US6151295A (en) * | 1998-02-26 | 2000-11-21 | Wavesat Telecom Inc. | OFDM receiving system |
US6188715B1 (en) | 1998-04-09 | 2001-02-13 | Andrzej Partyka | Frequency hopping system for intermittent transmission with receiver using individual tracking, FFT, and authentication |
US7224713B2 (en) | 1998-04-09 | 2007-05-29 | Andrzej Partyka | Telemetry system with authentication |
JP3515690B2 (ja) * | 1998-06-02 | 2004-04-05 | 松下電器産業株式会社 | Ofdma信号伝送装置及び方法 |
KR100519277B1 (ko) * | 1998-06-16 | 2005-11-25 | 엘지전자 주식회사 | 멀티캐리어온-오프키잉(mc-ook)을사용한주파수도약통신시스템의신호송수신장치 |
US6128330A (en) | 1998-11-24 | 2000-10-03 | Linex Technology, Inc. | Efficient shadow reduction antenna system for spread spectrum |
US6813254B1 (en) | 1998-11-25 | 2004-11-02 | Lucent Technologies Inc. | Methods and apparatus for wireless communication using code division duplex time-slotted CDMA |
US6542485B1 (en) | 1998-11-25 | 2003-04-01 | Lucent Technologies Inc. | Methods and apparatus for wireless communication using time division duplex time-slotted CDMA |
US7020071B2 (en) | 1998-11-25 | 2006-03-28 | Lucent Technologies Inc. | Methods and apparatus for wireless communication using orthogonal frequency division multiplexing |
US6473418B1 (en) * | 1999-03-11 | 2002-10-29 | Flarion Technologies, Inc. | Orthogonal frequency division multiplexing based spread spectrum multiple access |
US6269132B1 (en) | 1999-04-26 | 2001-07-31 | Intellon Corporation | Windowing function for maintaining orthogonality of channels in the reception of OFDM symbols |
KR20000074899A (ko) * | 1999-05-27 | 2000-12-15 | 박태진 | 주파수도약/직교주파수분할다중방식 통신시스템 |
US6285720B1 (en) | 1999-05-28 | 2001-09-04 | W J Communications, Inc. | Method and apparatus for high data rate wireless communications over wavefield spaces |
FR2798542B1 (fr) * | 1999-09-13 | 2002-01-18 | France Telecom | Recepteur a multiplexage par repartition en frequences orthogonales avec estimation iterative de canal et procede correspondant |
US6728293B1 (en) | 1999-09-14 | 2004-04-27 | Andrzej Partyka | Hopping pattern generation method in frequency hopping system for intermittent transmission |
US6654431B1 (en) | 1999-09-15 | 2003-11-25 | Telcordia Technologies, Inc. | Multicarrier personal access communication system |
US6967974B1 (en) | 1999-09-30 | 2005-11-22 | Andrzej Partyka | Transmission of urgent messages in telemetry system |
US6870875B1 (en) | 1999-09-30 | 2005-03-22 | Andrzej Partyka | Transmission of urgent messages in frequency hopping system for intermittent transmission |
US6553019B1 (en) * | 1999-12-23 | 2003-04-22 | Flarion Technologies, Inc. | Communications system employing orthogonal frequency division multiplexing based spread sprectrum multiple access |
US6731223B1 (en) | 2000-01-15 | 2004-05-04 | Andrzej Partyka | Meshed telemetry system |
US6894975B1 (en) | 2000-01-15 | 2005-05-17 | Andrzej Partyka | Synchronization and access of the nodes in a communications network |
US6816555B2 (en) * | 2000-02-18 | 2004-11-09 | Sony Corporation | Signal component demultiplexing apparatus, filter apparatus, receiving apparatus, communication apparatus, and communication method |
AU2001252897A1 (en) * | 2000-03-09 | 2001-09-17 | Raytheon Company | Frequency domain direct sequence spread spectrum with flexible time frequency code |
US6859450B1 (en) | 2000-03-27 | 2005-02-22 | Sharp Laboratories Of America, Inc. | Method for coordinated collision avoidance in multi-transceiver frequency hopping wireless device |
JP3799951B2 (ja) * | 2000-04-13 | 2006-07-19 | ソニー株式会社 | Ofdm送信装置及び方法 |
US6954481B1 (en) | 2000-04-18 | 2005-10-11 | Flarion Technologies, Inc. | Pilot use in orthogonal frequency division multiplexing based spread spectrum multiple access systems |
WO2001084757A1 (en) * | 2000-04-29 | 2001-11-08 | Chunyan Liu | Communication systems and methods using time-slot modulation or multi-carrier modulation with ds-cdma |
US6925105B1 (en) | 2000-05-01 | 2005-08-02 | Andrzej Partyka | Overhead reduction in system for intermittent transmission |
KR100370746B1 (ko) * | 2000-05-30 | 2003-02-05 | 한국전자통신연구원 | 다차원 직교 자원 도약 다중화 통신 방식 및 장치 |
US6396803B2 (en) * | 2000-06-29 | 2002-05-28 | California Amplifier, Inc. | Modulation methods and structures for wireless communication systems and transceivers |
US7295509B2 (en) | 2000-09-13 | 2007-11-13 | Qualcomm, Incorporated | Signaling method in an OFDM multiple access system |
US9130810B2 (en) | 2000-09-13 | 2015-09-08 | Qualcomm Incorporated | OFDM communications methods and apparatus |
US7209495B2 (en) | 2000-09-28 | 2007-04-24 | Andrzej Partyka | Urgent messages and power-up in frequency hopping system for intemittent transmission |
US8670390B2 (en) | 2000-11-22 | 2014-03-11 | Genghiscomm Holdings, LLC | Cooperative beam-forming in wireless networks |
US6947748B2 (en) | 2000-12-15 | 2005-09-20 | Adaptix, Inc. | OFDMA with adaptive subcarrier-cluster configuration and selective loading |
US20020111142A1 (en) * | 2000-12-18 | 2002-08-15 | Klimovitch Gleb V. | System, apparatus, and method of estimating multiple-input multiple-output wireless channel with compensation for phase noise and frequency offset |
US6930990B2 (en) * | 2001-03-23 | 2005-08-16 | Lucent Technologies Inc. | Serial communications link for a base stations |
US10355720B2 (en) | 2001-04-26 | 2019-07-16 | Genghiscomm Holdings, LLC | Distributed software-defined radio |
US10425135B2 (en) | 2001-04-26 | 2019-09-24 | Genghiscomm Holdings, LLC | Coordinated multipoint systems |
US9893774B2 (en) | 2001-04-26 | 2018-02-13 | Genghiscomm Holdings, LLC | Cloud radio access network |
US10931338B2 (en) | 2001-04-26 | 2021-02-23 | Genghiscomm Holdings, LLC | Coordinated multipoint systems |
US9819449B2 (en) | 2002-05-14 | 2017-11-14 | Genghiscomm Holdings, LLC | Cooperative subspace demultiplexing in content delivery networks |
EP1298875A1 (de) * | 2001-09-26 | 2003-04-02 | Siemens Aktiengesellschaft | OFDM-übertragung mit einem Blockschutzzeitintervall |
CA2469913A1 (en) * | 2001-12-17 | 2003-06-26 | International Business Machines Corporation | Method and apparatus for multi-carrier transmission |
US20060009911A1 (en) * | 2002-04-24 | 2006-01-12 | Ascend Geo, Llc | Methods and systems for acquiring and processing seismic data |
US10142082B1 (en) | 2002-05-14 | 2018-11-27 | Genghiscomm Holdings, LLC | Pre-coding in OFDM |
US10644916B1 (en) | 2002-05-14 | 2020-05-05 | Genghiscomm Holdings, LLC | Spreading and precoding in OFDM |
US9628231B2 (en) | 2002-05-14 | 2017-04-18 | Genghiscomm Holdings, LLC | Spreading and precoding in OFDM |
US10200227B2 (en) | 2002-05-14 | 2019-02-05 | Genghiscomm Holdings, LLC | Pre-coding in multi-user MIMO |
KR100849984B1 (ko) * | 2002-05-28 | 2008-08-01 | 삼성전자주식회사 | 티디에스-오에프디엠 송신기 및 그의 신호처리방법 |
KR100448894B1 (ko) * | 2002-10-08 | 2004-09-18 | 한국전자통신연구원 | 다차원 직교 자원 도약 다중화 통신 방식에 기반한 디지털통신 시스템 |
AU2003282424A1 (en) * | 2002-12-24 | 2004-07-22 | Electronics And Telecommunications Research Institute | Frequency hopping method in orthogonal frequency division multiplexing system |
JP2004304268A (ja) * | 2003-03-28 | 2004-10-28 | Matsushita Electric Ind Co Ltd | 無線送信装置、無線受信装置及び方法 |
US7254158B2 (en) * | 2003-05-12 | 2007-08-07 | Qualcomm Incorporated | Soft handoff with interference cancellation in a wireless frequency hopping communication system |
US7505522B1 (en) * | 2003-10-06 | 2009-03-17 | Staccato Communications, Inc. | Spectral shaping in multiband OFDM transmitter with clipping |
WO2005062510A1 (ja) * | 2003-12-24 | 2005-07-07 | Nec Corporation | 無線通信システム、無線通信装置及びそれに用いるリソース割当て方法 |
US7519123B1 (en) | 2004-04-08 | 2009-04-14 | Staccato Communications, Inc. | Spectral shaping for multiband OFDM transmitters with time spreading |
US9137822B2 (en) | 2004-07-21 | 2015-09-15 | Qualcomm Incorporated | Efficient signaling over access channel |
US9148256B2 (en) | 2004-07-21 | 2015-09-29 | Qualcomm Incorporated | Performance based rank prediction for MIMO design |
US11381285B1 (en) | 2004-08-02 | 2022-07-05 | Genghiscomm Holdings, LLC | Transmit pre-coding |
US11184037B1 (en) | 2004-08-02 | 2021-11-23 | Genghiscomm Holdings, LLC | Demodulating and decoding carrier interferometry signals |
US11552737B1 (en) | 2004-08-02 | 2023-01-10 | Genghiscomm Holdings, LLC | Cooperative MIMO |
US7804884B2 (en) * | 2004-08-16 | 2010-09-28 | Realtek Semiconductor Corp. | Packet detection in time/frequency hopped wireless communication systems |
US7573851B2 (en) | 2004-12-07 | 2009-08-11 | Adaptix, Inc. | Method and system for switching antenna and channel assignments in broadband wireless networks |
US9246560B2 (en) | 2005-03-10 | 2016-01-26 | Qualcomm Incorporated | Systems and methods for beamforming and rate control in a multi-input multi-output communication systems |
US9154211B2 (en) | 2005-03-11 | 2015-10-06 | Qualcomm Incorporated | Systems and methods for beamforming feedback in multi antenna communication systems |
US8446892B2 (en) | 2005-03-16 | 2013-05-21 | Qualcomm Incorporated | Channel structures for a quasi-orthogonal multiple-access communication system |
US9520972B2 (en) | 2005-03-17 | 2016-12-13 | Qualcomm Incorporated | Pilot signal transmission for an orthogonal frequency division wireless communication system |
US9143305B2 (en) | 2005-03-17 | 2015-09-22 | Qualcomm Incorporated | Pilot signal transmission for an orthogonal frequency division wireless communication system |
US9461859B2 (en) | 2005-03-17 | 2016-10-04 | Qualcomm Incorporated | Pilot signal transmission for an orthogonal frequency division wireless communication system |
US9184870B2 (en) | 2005-04-01 | 2015-11-10 | Qualcomm Incorporated | Systems and methods for control channel signaling |
US9036538B2 (en) | 2005-04-19 | 2015-05-19 | Qualcomm Incorporated | Frequency hopping design for single carrier FDMA systems |
US9408220B2 (en) | 2005-04-19 | 2016-08-02 | Qualcomm Incorporated | Channel quality reporting for adaptive sectorization |
US8879511B2 (en) | 2005-10-27 | 2014-11-04 | Qualcomm Incorporated | Assignment acknowledgement for a wireless communication system |
US8611284B2 (en) | 2005-05-31 | 2013-12-17 | Qualcomm Incorporated | Use of supplemental assignments to decrement resources |
US8565194B2 (en) | 2005-10-27 | 2013-10-22 | Qualcomm Incorporated | Puncturing signaling channel for a wireless communication system |
US8462859B2 (en) | 2005-06-01 | 2013-06-11 | Qualcomm Incorporated | Sphere decoding apparatus |
US8599945B2 (en) | 2005-06-16 | 2013-12-03 | Qualcomm Incorporated | Robust rank prediction for a MIMO system |
US9179319B2 (en) | 2005-06-16 | 2015-11-03 | Qualcomm Incorporated | Adaptive sectorization in cellular systems |
US8670493B2 (en) | 2005-06-22 | 2014-03-11 | Eices Research, Inc. | Systems and/or methods of increased privacy wireless communications |
EP1746743B1 (de) * | 2005-07-21 | 2010-01-06 | Mitsubishi Electric R&D Centre Europe B.V. | Übertragungsverfahren in einem TDD-System mit einer Schutzzeit mit variabler Länge |
US8885628B2 (en) | 2005-08-08 | 2014-11-11 | Qualcomm Incorporated | Code division multiplexing in a single-carrier frequency division multiple access system |
US20070041457A1 (en) | 2005-08-22 | 2007-02-22 | Tamer Kadous | Method and apparatus for providing antenna diversity in a wireless communication system |
US9209956B2 (en) | 2005-08-22 | 2015-12-08 | Qualcomm Incorporated | Segment sensitive scheduling |
US8644292B2 (en) | 2005-08-24 | 2014-02-04 | Qualcomm Incorporated | Varied transmission time intervals for wireless communication system |
US9136974B2 (en) | 2005-08-30 | 2015-09-15 | Qualcomm Incorporated | Precoding and SDMA support |
GB2431322B (en) * | 2005-10-17 | 2008-03-26 | Univ Westminster | Communications system |
US8477684B2 (en) | 2005-10-27 | 2013-07-02 | Qualcomm Incorporated | Acknowledgement of control messages in a wireless communication system |
US9225416B2 (en) | 2005-10-27 | 2015-12-29 | Qualcomm Incorporated | Varied signaling channels for a reverse link in a wireless communication system |
US8045512B2 (en) | 2005-10-27 | 2011-10-25 | Qualcomm Incorporated | Scalable frequency band operation in wireless communication systems |
US9225488B2 (en) | 2005-10-27 | 2015-12-29 | Qualcomm Incorporated | Shared signaling channel |
US9210651B2 (en) | 2005-10-27 | 2015-12-08 | Qualcomm Incorporated | Method and apparatus for bootstraping information in a communication system |
US8693405B2 (en) | 2005-10-27 | 2014-04-08 | Qualcomm Incorporated | SDMA resource management |
US9088384B2 (en) | 2005-10-27 | 2015-07-21 | Qualcomm Incorporated | Pilot symbol transmission in wireless communication systems |
US8582509B2 (en) | 2005-10-27 | 2013-11-12 | Qualcomm Incorporated | Scalable frequency band operation in wireless communication systems |
US9144060B2 (en) | 2005-10-27 | 2015-09-22 | Qualcomm Incorporated | Resource allocation for shared signaling channels |
US9172453B2 (en) | 2005-10-27 | 2015-10-27 | Qualcomm Incorporated | Method and apparatus for pre-coding frequency division duplexing system |
US8582548B2 (en) | 2005-11-18 | 2013-11-12 | Qualcomm Incorporated | Frequency division multiple access schemes for wireless communication |
US20090257420A1 (en) * | 2008-04-10 | 2009-10-15 | Honeywell International Inc. | Process Control System With Enhanced Communication Throughput Using Frequency Agility |
US8380531B2 (en) * | 2008-07-25 | 2013-02-19 | Invivodata, Inc. | Clinical trial endpoint development process |
CN101394390B (zh) * | 2008-10-20 | 2011-04-20 | 北京鑫百灵宽带通信科技有限公司 | 一种扩频型pdh微波通信系统和方法 |
US10243773B1 (en) | 2017-06-30 | 2019-03-26 | Genghiscomm Holdings, LLC | Efficient peak-to-average-power reduction for OFDM and MIMO-OFDM |
US10637705B1 (en) | 2017-05-25 | 2020-04-28 | Genghiscomm Holdings, LLC | Peak-to-average-power reduction for OFDM multiple access |
US11917604B2 (en) | 2019-01-25 | 2024-02-27 | Tybalt, Llc | Orthogonal multiple access and non-orthogonal multiple access |
CN113454964A (zh) | 2019-01-25 | 2021-09-28 | 珍吉斯科姆控股有限责任公司 | 正交多址和非正交多址 |
US11343823B2 (en) | 2020-08-16 | 2022-05-24 | Tybalt, Llc | Orthogonal multiple access and non-orthogonal multiple access |
WO2020242898A1 (en) | 2019-05-26 | 2020-12-03 | Genghiscomm Holdings, LLC | Non-orthogonal multiple access |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0596699A2 (de) * | 1992-11-03 | 1994-05-11 | Rafael Armament Development Authority | Spreizspektrumfunktelefonsystem mit Frequenzsprung |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2658016B1 (fr) * | 1990-02-06 | 1994-01-21 | Etat Francais Cnet | Procede de diffusion de donnees numeriques, notamment pour la radiodiffusion a haut debit vers des mobiles, a entrelacement temps-frequence et demodulation coherente, et recepteur correspondant. |
FR2671923B1 (fr) * | 1991-01-17 | 1993-04-16 | France Etat | Dispositif de demodulation coherente de donnees numeriques entrelacees en temps et en frequence, a estimation de la reponse frequentielle du canal de transmission et seuillage, et emetteur correspondant. |
US5127021A (en) * | 1991-07-12 | 1992-06-30 | Schreiber William F | Spread spectrum television transmission |
JP2904986B2 (ja) * | 1992-01-31 | 1999-06-14 | 日本放送協会 | 直交周波数分割多重ディジタル信号送信装置および受信装置 |
US5282222A (en) * | 1992-03-31 | 1994-01-25 | Michel Fattouche | Method and apparatus for multiple access between transceivers in wireless communications using OFDM spread spectrum |
KR950008368B1 (ko) * | 1992-05-07 | 1995-07-28 | 주식회사금호 | 비공기압 타이어 |
FR2693861A1 (fr) * | 1992-07-16 | 1994-01-21 | Philips Electronique Lab | Récepteur de signaux à répartition multiplexée de fréquences orthogonales muni d'un dispositif de synchronisation de fréquences. |
US5425050A (en) * | 1992-10-23 | 1995-06-13 | Massachusetts Institute Of Technology | Television transmission system using spread spectrum and orthogonal frequency-division multiplex |
-
1994
- 1994-12-15 DE DE69434353T patent/DE69434353T2/de not_active Expired - Lifetime
- 1994-12-15 EP EP94203635A patent/EP0660559B1/de not_active Expired - Lifetime
- 1994-12-15 SG SG1996008533A patent/SG48266A1/en unknown
- 1994-12-21 US US08/361,080 patent/US5548582A/en not_active Expired - Lifetime
- 1994-12-21 JP JP31878494A patent/JP3693303B2/ja not_active Expired - Lifetime
- 1994-12-22 KR KR1019940035844A patent/KR100379047B1/ko not_active IP Right Cessation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0596699A2 (de) * | 1992-11-03 | 1994-05-11 | Rafael Armament Development Authority | Spreizspektrumfunktelefonsystem mit Frequenzsprung |
Non-Patent Citations (2)
Title |
---|
CIMINI: "Analysis and simulation of a digital mobile channel using orthogonal frequency division multiplexing", IEEE TRANSACTIONS ON COMMUNICATIONS, vol. 33, no. 7, July 1985 (1985-07-01), NEW YORK US, pages 665 - 675, XP000619410, DOI: doi:10.1109/TCOM.1985.1096357 * |
WARNER & LEUNG: "OFDM/FM frame synchronization for mobile radio data communication", IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, vol. 42, no. 3, August 1993 (1993-08-01), NEW YORK US, pages 302 - 313, XP000394042, DOI: doi:10.1109/25.231882 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2296407B (en) * | 1994-12-22 | 1999-10-06 | Roke Manor Research | Frequency hopped cellular mobile radio systems |
EP1330045A1 (de) * | 2000-10-24 | 2003-07-23 | Mitsubishi Denki Kabushiki Kaisha | Sender und empfänger eines spreizspektrum-kommunikationssystems und modulations- und demodulationsverfahren dafür |
EP1330045A4 (de) * | 2000-10-24 | 2007-05-09 | Mitsubishi Electric Corp | Sender und empfänger eines spreizspektrum-kommunikationssystems und modulations- und demodulationsverfahren dafür |
US7272162B2 (en) | 2000-10-24 | 2007-09-18 | Mitsubishi Denki Kabushiki Kaisha | Transmitter and receiver for spread-spectrum communication system, and modulation and demodulation methods thereof |
CN108964702A (zh) * | 2018-08-24 | 2018-12-07 | 电子科技大学 | 用于跳频通信中跳频序列随机映射后的反演方法 |
CN108964702B (zh) * | 2018-08-24 | 2019-08-23 | 电子科技大学 | 用于跳频通信中跳频序列随机映射后的反演方法 |
Also Published As
Publication number | Publication date |
---|---|
DE69434353T2 (de) | 2006-03-09 |
DE69434353D1 (de) | 2005-06-02 |
JP3693303B2 (ja) | 2005-09-07 |
EP0660559B1 (de) | 2005-04-27 |
JPH07288491A (ja) | 1995-10-31 |
KR100379047B1 (ko) | 2003-06-19 |
KR950022501A (ko) | 1995-07-28 |
US5548582A (en) | 1996-08-20 |
SG48266A1 (en) | 1998-04-17 |
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